Add missing `allowNotifications()` in `BaselineProfileGenerator.kt`

Closes #853

benchmarks/src/main/java/com/google/samples/apps/nowinandroid/baselineprofile/BaselineProfileGenerator.kt

@@ -18,6 +18,7 @@ package com.google.samples.apps.nowinandroid.baselineprofile
 
 import androidx.benchmark.macro.junit4.BaselineProfileRule
 import com.google.samples.apps.nowinandroid.PACKAGE_NAME
+import com.google.samples.apps.nowinandroid.allowNotifications
 import com.google.samples.apps.nowinandroid.bookmarks.goToBookmarksScreen
 import com.google.samples.apps.nowinandroid.foryou.forYouScrollFeedDownUp
 import com.google.samples.apps.nowinandroid.foryou.forYouSelectTopics
@@ -43,6 +44,8 @@ class BaselineProfileGenerator {
             pressHome()
             startActivityAndWait()
 
+            allowNotifications()
+
             // Scroll the feed critical user journey
             forYouWaitForContent()
             forYouSelectTopics(true)